External voltage driving method for organic electroluminescent component

Abstract

The present invention provides an external voltage driving method for an organic electroluminescent component, which belongs to the field of external voltage driving technology, and includes: step 1: obtaining the electrical characteristics and working environment of the organic electroluminescent component, and determining the driving protocol; step 2: determining the voltage waveform and the relevant parameters of the duty cycle in the switching cycle according to the driving protocol; step 3: obtaining the electromigration phenomenon when the switch tube of the organic electroluminescent component is turned on and the transmission of the electric field to the carrier when the switch tube is turned off; step 4: determining the electromigration effect caused by voltage fluctuation based on the damping factor; step 5: setting the working frequency of the switch tube based on the relevant parameters according to the electromigration effect, so as to realize the external voltage driving of the organic electroluminescent component. The method solves the problem that the component may be affected by external factors, resulting in the instability of the external voltage driving method, and at the same time, the electromigration phenomenon of the component and the transmission of the electric field to the carrier cannot be considered, which reduces the stability and performance of the component.

Description

Technical Field

[0001] The present invention relates to the technical field of external voltage driving, and in particular to an external voltage driving method for an organic electroluminescent component. Background Art

[0002] With the development of renewable energy, organic electronic devices are increasingly used in fields such as power conversion and energy storage.

[0003] However, traditional organic electroluminescent components are usually affected by various external factors, such as temperature changes and mechanical vibrations, which can lead to instability in the external voltage driving method. At the same time, the existing external voltage driving method of organic electroluminescent components cannot take into account the electromigration phenomenon of the components and the transmission of carriers by the electric field, resulting in the organic electroluminescent components being more sensitive to changes in the external environment, thereby reducing the stability and performance of the components.

[0004] Therefore, the present invention provides an external voltage driving method for an organic electroluminescent component. Summary of the invention

[0005] The present invention provides an external voltage driving method for an organic electroluminescent component, which is used to solve the problem in the prior art that the external voltage driving method may be affected by various external factors, such as temperature changes and mechanical vibrations, which may lead to instability of the external voltage driving method. At the same time, the existing external voltage driving method for organic electroluminescent components cannot take into account the electromigration phenomenon of the component and the transmission of carriers by the electric field, resulting in the organic electroluminescent component being more sensitive to changes in the external environment, thereby reducing the stability and performance of the component.

[0006] In one aspect, the present invention provides an external voltage driving method for an organic electroluminescent component, comprising:

[0007] Step 1: Obtain the electrical characteristics and working environment of the organic electroluminescent component, and determine the driving protocol according to the electrical characteristics and working environment;

[0008] Step 2: Determine the voltage waveform and duty cycle related parameters within the switching cycle according to the driving protocol;

[0009] Step 3: obtaining the electromigration phenomenon when the switch tube of the organic electroluminescent component is turned on, setting multiple voltage levels, and obtaining the transmission of the electric field to the carriers when the switch tube of the organic electroluminescent component is turned off;

[0010] Step 4: Determine the electromigration effect caused by voltage fluctuation based on the electromigration phenomenon and the electric field on carrier transport based on the damping factor;

[0011] Step 5: Setting the operating frequency of the switch tube based on relevant parameters according to the electromigration effect, and realizing external voltage driving of the organic electroluminescent component according to the operating frequency of the switch tube.

[0012] According to an external voltage driving method of an organic electroluminescent component provided by the present invention, the electrical characteristics and working environment of the organic electroluminescent component are obtained, and a driving protocol is determined according to the electrical characteristics and working environment, including:

[0013] Determine the model and specification of the organic electroluminescent component, and determine the electrical parameters in the circuit of the organic electroluminescent component according to the model and specification;

[0014] Obtaining electrical characteristics of the organic electroluminescent component according to the electrical parameters based on the user manual;

[0015] Acquire the working temperature and working humidity of the organic electroluminescent component according to the sensor, and acquire the working environment of the organic electroluminescent component according to the working temperature and working humidity;

[0016] Determine a driving topology according to electrical characteristics and working environment of the component, and determine a driving mode according to the driving topology;

[0017] A control strategy is acquired according to the driving mode based on the driving power type, and a driving protocol is determined according to the control strategy.

[0018] According to an external voltage driving method of an organic electroluminescent component provided by the present invention, the voltage waveform and the relevant parameters of the duty cycle in the switching cycle are determined according to the driving protocol, including:

[0019] Acquire the length and frequency of the switching cycle according to the driving protocol, and acquire the number of voltage changes in each switching cycle according to the length and frequency of the switching cycle;

[0020] Obtaining a ripple coefficient of the voltage in each switching cycle according to the number of changes of the voltage in each switching cycle;

[0021] The pulse width of the voltage is obtained according to the ripple coefficient of the voltage, and the relevant parameters of the voltage waveform and the duty cycle are obtained based on the driving protocol requirements.

[0022] According to an external voltage driving method of an organic electroluminescent component provided by the present invention, the electromigration phenomenon when the switch tube of the organic electroluminescent component is turned on is obtained, multiple voltage levels are set, and the transmission of electric field to carriers when the switch tube of the organic electroluminescent component is turned off is obtained, including:

[0023] Obtaining the electrochemical properties of organic electroluminescent components based on electrochemical impedance spectroscopy analysis;

[0024] Determining the rate and mechanism of electromigration when the switch tube is turned on and the capacitance effect during the electromigration process according to the electrochemical performance;

[0025] Determining the electromigration phenomenon according to the electromigration rate, mechanism and capacitance effect during the electromigration process;

[0026] Apply different bias voltages to the switch tube of the organic electroluminescent component, and obtain the electric field distribution under different bias voltages and the current response of the switch tube under each bias voltage based on the electric field mapping technology;

[0027] Evaluating the influence of the electric field on carrier transport according to the electric field distribution under the different bias voltages and the current response of the switch tube under each bias voltage;

[0028] According to the influence of the electric field on the carrier transmission, the transmission of the carrier by the electric field when the switch tube of the organic electroluminescent component is turned off is obtained based on the carrier transport behavior.

[0029] According to an external voltage driving method of an organic electroluminescent component provided by the present invention, after obtaining the electrochemical performance of the organic electroluminescent component according to electrochemical impedance spectroscopy analysis, the method comprises:

[0030] Obtain electrochemical impedance spectroscopy samples of organic electroluminescent components using a four-terminal resistance box;

[0031] Cleaning the sample and collecting electrochemical impedance spectroscopy data;

[0032] Analyzing the data, and determining the electrochemical impedance spectroscopy characteristics of the surface of the organic electroluminescent component according to the analysis results;

[0033] The electrochemical performance of the organic electroluminescent component is obtained based on the shape and intensity of the electrochemical impedance spectrum curve according to the electrochemical impedance spectrum characteristics.

[0034] According to an external voltage driving method of an organic electroluminescent component provided by the present invention, the electromigration effect caused by voltage fluctuation is determined based on the damping factor according to the electromigration phenomenon and the transmission of carriers by the electric field, including:

[0035] According to the relationship between the damping factor and the electric field and the movement of the carriers in the electric field, the initial position and velocity of the carriers, as well as the strength and direction of the electric field are obtained;

[0036] Constructing a mathematical model describing the electric field-carrier transport process according to the initial position and velocity of the carriers, and the intensity and direction of the electric field;

[0037] The voltage fluctuation as an external excitation factor is added to the model to obtain the carrier transport process after the electric field changes;

[0038] The electromigration effect caused by voltage fluctuation is determined according to the electromigration phenomenon and the carrier transport process.

[0039] According to an external voltage driving method of an organic electroluminescent component provided by the present invention, the operating frequency of the switch tube is set based on relevant parameters according to the electromigration effect, and the external voltage driving of the organic electroluminescent component is realized according to the operating frequency of the switch tube, including:

[0040] Obtaining the bias caused by uneven charge distribution on both sides of the PN junction when the transistor of the organic electroluminescent component is working according to the electromigration effect;

[0041] Determine the operating characteristics of the transistor of the organic electroluminescent component according to the bias, and determine the opening angle and the bias degree of the operating point of the transistor of the organic electroluminescent component according to the operating characteristics;

[0042] The operating frequency of the switch tube is set based on relevant parameters according to the opening angle of the transistor of the organic electroluminescent component and the bias degree of the operating point, and the external voltage driving of the organic electroluminescent component is realized according to the operating frequency of the switch tube.

[0043] According to an external voltage driving method of an organic electroluminescent component provided by the present invention, before obtaining the electrical characteristics and working environment of the organic electroluminescent component and determining the driving protocol according to the electrical characteristics and working environment, the method further includes:

[0044] Acquire the motor operating parameters of the organic electroluminescent component, and determine the current non-zero torque of the organic electroluminescent component under different power generation effects according to the motor operating parameters;

[0045] Determine an offset component according to the current non-zero torque and the standard non-zero torque under different power generation effects;

[0046] Determine the mechanical friction level of the motor of the organic electroluminescent component, and determine the friction force additional torque component of the motor when it is working according to the mechanical friction level;

[0047] According to the offset component and the friction additional torque component, the net torque component of the organic electroluminescent component under different power generation effects is obtained;

[0048] Determine a transmission torque requirement parameter between the light-emitting drive assembly and the motor, and determine a drive redundancy coefficient of the motor according to the transmission torque requirement parameter and the net torque component;

[0049] Determine a numerical attribute of a drive redundancy coefficient, and determine a drive supply level of the motor according to the numerical attribute, wherein the numerical attribute includes: a positive value and a negative value;

[0050] Determine the external voltage auxiliary driving level requirement according to the driving supply level, and determine the auxiliary driving configuration parameters of the driving node corresponding to each light-emitting component according to the external voltage auxiliary driving level requirement and the configuration parameters of the driving node corresponding to the light-emitting driving component;

[0051] Determine the synchronization configuration parameters of the external voltage auxiliary drive according to the auxiliary drive configuration parameters of the driving node corresponding to each light-emitting component;

[0052] The drive protocol is determined based on the synchronous configuration parameters combined with the electrical characteristics and the working environment.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] By determining the relevant parameters of the voltage waveform and duty cycle within the switching cycle through the driving protocol, and combining the electromigration phenomenon and the electromigration effect caused by the voltage fluctuation determined by the electric field on the carrier transmission, the operating frequency of the switching tube is set. This can reduce the failure rate of the switching tube to a certain extent and ensure the reliability of the external voltage driving method of the organic electroluminescent component. At the same time, it can take into account the electromigration phenomenon of the component and the transmission of carriers by the electric field, avoid the organic electroluminescent component from being overly sensitive to changes in the external environment, and improve the stability and performance of the component. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0056] Figure 1 It is a schematic flow chart of an external voltage driving method of an organic electroluminescent component provided by an embodiment of the present invention;

[0057] Figure 2 It is a flow chart of determining a driving protocol according to electrical characteristics and a working environment provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] Embodiment 1:

[0060] An embodiment of the present invention provides an external voltage driving method for an organic electroluminescent component, such as Figure 1 As shown, the method mainly includes the following steps:

[0061] Step 1: Obtain the electrical characteristics and working environment of the organic electroluminescent component, and determine the driving protocol according to the electrical characteristics and working environment;

[0062] Step 2: Determine the voltage waveform and duty cycle related parameters within the switching cycle according to the driving protocol;

[0063] Step 3: obtaining the electromigration phenomenon when the switch tube of the organic electroluminescent component is turned on, setting multiple voltage levels, and obtaining the transmission of the electric field to the carriers when the switch tube of the organic electroluminescent component is turned off;

[0064] Step 4: Determine the electromigration effect caused by voltage fluctuation based on the electromigration phenomenon and the electric field on carrier transport based on the damping factor;

[0065] Step 5: Setting the operating frequency of the switch tube based on relevant parameters according to the electromigration effect, and realizing external voltage driving of the organic electroluminescent component according to the operating frequency of the switch tube.

[0066] In this embodiment, the electrical characteristics of the organic electroluminescent component may be: a wide operating voltage range and a fast response speed.

[0067] In this embodiment, the driving protocol is a set of rules or instruction sets followed by the opening and closing control of power switches (such as circuit breakers, contactors, etc.) in the AC power system.

[0068] In this embodiment, the voltage waveform refers to the form in which the voltage in a circuit or system changes with time.

[0069] In this embodiment, the duty cycle-related parameter refers to a physical quantity that describes the relationship between current and voltage in a power supply device or circuit.

[0070] In this embodiment, electromigration refers to a phenomenon in which charges move inside a transistor.

[0071] In this embodiment, the voltage level refers to the voltage of alternating current or direct current.

[0072] In this embodiment, the transmission of carriers by electric field refers to the movement process of electrons in semiconductor materials due to the action of electric field.

[0073] In this embodiment, the electromigration effect refers to the phenomenon that free carriers (electrons or holes) in a semiconductor material are displaced under the action of an electric field.

[0074] In this embodiment, the damping factor is a physical quantity used to describe the attenuation degree in a physical vibration or wave system.

[0075] In this embodiment, the operating frequency of the switch tube refers to the speed of the periodic change of the switching of the switch tube, and represents the switching speed of the switch tube, that is, the length of time it takes for the switch tube to complete a switching action in one cycle.

[0076] In this embodiment, the external voltage driving of the organic electroluminescent component refers to controlling and adjusting the working state and performance of the organic electroluminescent component by applying an external voltage.

[0077] The beneficial effects of the above technical solution are: by determining the relevant parameters of the voltage waveform and duty cycle within the switching cycle through the driving protocol, and combining the electromigration phenomenon and the electromigration effect caused by the voltage fluctuation determined by the electric field on the carrier transmission, the operating frequency of the switching tube is set, which can reduce the failure rate of the switching tube to a certain extent, and ensure the reliability of the external voltage driving method of the organic electroluminescent component. At the same time, it can take into account the electromigration phenomenon of the component and the transmission of carriers by the electric field, avoid the organic electroluminescent component from being overly sensitive to changes in the external environment, and improve the stability and performance of the component.

[0078] Embodiment 2:

[0079] Based on Example 1, the embodiment of the present invention obtains the electrical characteristics and working environment of the organic electroluminescent component, and determines the driving protocol according to the electrical characteristics and working environment, such as Figure 2 As shown, including:

[0080] S01: Determine the model and specification of the organic electroluminescent component, and determine the electrical parameters in the circuit of the organic electroluminescent component according to the model and specification;

[0081] S02: obtaining electrical characteristics of the organic electroluminescent component according to the electrical parameters based on the user manual;

[0082] S03: obtaining the working temperature and working humidity of the organic electroluminescent component according to the sensor, and obtaining the working environment of the organic electroluminescent component according to the working temperature and working humidity;

[0083] S04: determining a driving topology according to electrical characteristics and a working environment of the component, and determining a driving mode according to the driving topology;

[0084] S05: Acquire a control strategy based on the driving power type according to the driving mode, and determine a driving protocol according to the control strategy.

[0085] In this embodiment, the electrical parameters in the organic electroluminescent component circuit include: voltage, current, resistance and capacitance.

[0086] In this embodiment, the electrical characteristics of the organic electroluminescent component may be: a wide operating voltage range and a fast response speed.

[0087] In this embodiment, the driving topology refers to a topology structure that implements load balancing and parallel computing in a multi-processor or distributed system.

[0088] In this embodiment, the driving mode refers to a mode of behavior and internal state of the system when it is driven by an external voltage.

[0089] In this embodiment, the power source type refers to a device that provides energy to the electronic device, including: a battery power source, an AC power source, and a DC power source.

[0090] In this embodiment, the control strategy refers to adjusting the state of the system through a specific algorithm or method so that the system can complete the external voltage driving of the organic electroluminescent component.

[0091] The beneficial effects of the above technical solution are: determining the driving topology and driving mode according to the electrical characteristics of the organic electroluminescent component and the working environment of the organic electroluminescent component, thereby determining the driving protocol according to the control strategy, being able to select targeted driving protocols, thereby improving the reliability of component operation and, at the same time, improving the performance of the component.

[0092] Embodiment 3:

[0093] Based on Example 2, the embodiment of the present invention determines the voltage waveform and the relevant parameters of the duty cycle in the switching cycle according to the driving protocol, including:

[0094] Acquire the length and frequency of the switching cycle according to the driving protocol, and acquire the number of voltage changes in each switching cycle according to the length and frequency of the switching cycle;

[0095] Obtaining a ripple coefficient of the voltage in each switching cycle according to the number of changes of the voltage in each switching cycle;

[0096] The pulse width of the voltage is obtained according to the ripple coefficient of the voltage, and the relevant parameters of the voltage waveform and the duty cycle are obtained based on the driving protocol requirements.

[0097] In this embodiment, the driving protocol is a set of rules or instruction sets followed by the opening and closing control of power switches (such as circuit breakers, contactors, etc.) in the AC power system.

[0098] In this embodiment, a switching cycle refers to a complete process of a switching device switching from one state to another state.

[0099] In this embodiment, the number of voltage changes in each switching cycle refers to the time interval during which the control system adjusts the magnitude or shape of the voltage for some reason.

[0100] In this embodiment, the voltage ripple coefficient refers to the ratio of the effective value to the average value of the voltage in the alternating current.

[0101] In this embodiment, the pulse width of the voltage is used to control and adjust the working state of the electronic device.

[0102] In this embodiment, the voltage waveform refers to the form in which the voltage in a circuit or system changes with time.

[0103] In this embodiment, the duty cycle-related parameter refers to a physical quantity that describes the relationship between current and voltage in a power supply device or circuit.

[0104] The beneficial effects of the above technical solution are: the number of voltage changes in each switching cycle is obtained according to the driving protocol, so as to determine the voltage ripple coefficient, and the relevant parameters of the voltage waveform and duty cycle are obtained based on the driving protocol requirements, so as to ensure that the voltage waveform and duty cycle are always controlled in the most optimized manner during the switching cycle, thereby achieving more efficient energy efficiency management.

[0105] Embodiment 4:

[0106] Based on Example 3, the embodiment of the present invention obtains the electromigration phenomenon when the switch tube of the organic electroluminescent component is turned on, sets multiple voltage levels, and obtains the transmission of the electric field to the carrier when the switch tube of the organic electroluminescent component is turned off, including:

[0107] Obtaining the electrochemical properties of organic electroluminescent components based on electrochemical impedance spectroscopy analysis;

[0108] Determining the rate and mechanism of electromigration when the switch tube is turned on and the capacitance effect during the electromigration process according to the electrochemical performance;

[0109] Determining the electromigration phenomenon according to the electromigration rate, mechanism and capacitance effect during the electromigration process;

[0110] Apply different bias voltages to the switch tube of the organic electroluminescent component, and obtain the electric field distribution under different bias voltages and the current response of the switch tube under each bias voltage based on the electric field mapping technology;

[0111] Evaluating the influence of the electric field on carrier transport according to the electric field distribution under the different bias voltages and the current response of the switch tube under each bias voltage;

[0112] According to the influence of the electric field on the carrier transmission, the transmission of the carrier by the electric field when the switch tube of the organic electroluminescent component is turned off is obtained based on the carrier transport behavior.

[0113] In this embodiment, electrochemical impedance spectroscopy is a non-destructive testing technology used in the field of electrochemistry, which measures and analyzes the current response characteristics observed when an alternating voltage is applied to an electrochemical system under specific conditions.

[0114] In this embodiment, the electrochemical properties of the organic electroluminescent component include: brightness, energy efficiency, stability and durability.

[0115] In this embodiment, electromigration refers to a phenomenon in which charges move inside a transistor.

[0116] In this embodiment, the electrical mobility when the switch tube is turned on refers to the speed at which the current passes through the transistor when the switch tube is in the on state, that is, the distance that the electrons move in the material per second, which determines the speed of the switch tube during the load switching process.

[0117] In this embodiment, the electromigration mechanism when the switch tube is turned on refers to the movement process of charges through the internal channel of the transistor when the switch tube is in the on state.

[0118] In this embodiment, the capacitance effect during the electromigration process refers to the fact that, during the electromigration process, capacitors may be formed inside the switch tube due to the accumulation and distribution of charges. These capacitors may cause uneven current distribution, thereby affecting the working performance of the switch tube.

[0119] In this embodiment, the bias voltage refers to an additional voltage applied across the semiconductor device in order to provide appropriate voltage conditions to achieve a desired conductivity or current level.

[0120] In this embodiment, the electric field mapping technology may be: X-ray diffraction, inductively coupled oscillator, or second harmonic generation.

[0121] In this embodiment, the electric field distribution under different bias voltages may be:

[0122] When a forward bias voltage is applied, the internal charge of the semiconductor material begins to move toward the electrode, forming an electric field between positive and negative charges. The electric field is concentrated in the area close to the electrode, making the movement of electrons and holes easier, thereby improving conductivity.

[0123] When a reverse bias voltage is applied, charges accumulate around the electrode to form a layer of equal positive and negative charges. The electric field is mainly distributed in the area around the electrode, but a certain electric field is also generated in the area far away from the electrode.

[0124] When a subthreshold bias voltage is applied, the electric field is confined to a specific area to avoid excessive charge movement, causing the conductivity to change only in that specific area rather than uniformly across the entire surface.

[0125] The beneficial effects of the above technical solution are: obtaining the electromigration phenomenon when the switch tube of the organic electroluminescent component is turned on, setting multiple voltage levels, and obtaining the transmission of carriers to the electric field when the switch tube of the organic electroluminescent component is turned off, which can improve the working efficiency of the switch tube. At the same time, it improves the transmission efficiency of carriers in the organic electroluminescent component and reduces component losses.

[0126] Embodiment 5:

[0127] Based on Example 4, after obtaining the electrochemical performance of the organic electroluminescent component according to electrochemical impedance spectroscopy, the embodiment of the present invention includes:

[0128] Obtain electrochemical impedance spectroscopy samples of organic electroluminescent components using a four-terminal resistance box;

[0129] Cleaning the sample and collecting electrochemical impedance spectroscopy data;

[0130] Analyzing the data, and determining the electrochemical impedance spectroscopy characteristics of the surface of the organic electroluminescent component according to the analysis results;

[0131] The electrochemical performance of the organic electroluminescent component is obtained based on the shape and intensity of the electrochemical impedance spectrum curve according to the electrochemical impedance spectrum characteristics.

[0132] In this embodiment, the four-terminal resistance box is a device for measuring resistance values, and has four independent test terminals, which can conveniently measure the resistance of different circuit elements.

[0133] In this embodiment, the electrochemical impedance spectrum sample of the organic electroluminescent component refers to a data set for studying the resistance change of the organic electroluminescent component and its relationship with the electric field and the light field in a specific electrochemical environment.

[0134] In this embodiment, the data of the electrochemical impedance spectrum may be: charge transfer and impedance distribution between different interfaces of the organic electroluminescent component, the excited state dynamics of the organic electroluminescent component under light excitation, and the temperature sensitivity of the organic electroluminescent component.

[0135] In this embodiment, the electrochemical impedance spectroscopy characteristics of the surface of the organic electroluminescent component include: interface resistance, excited state dynamics, and non-radiative transition.

[0136] In this embodiment, the electrochemical impedance spectroscopy curve is used to describe various physical and chemical effects in the electrochemical reaction process on the electrode surface.

[0137] In this embodiment, the intensity of the electrochemical impedance spectroscopy curve refers to the impedance value per unit frequency.

[0138] In this embodiment, the electrochemical properties of the organic electroluminescent component include: brightness, energy efficiency, stability and durability.

[0139] The beneficial effects of the above technical solution are: obtaining electrochemical impedance spectroscopy samples of organic electroluminescent components and cleaning them, obtaining electrochemical impedance spectroscopy data and determining the electrochemical impedance spectroscopy characteristics of the component surface, which can better understand and evaluate component performance, obtain a suitable external voltage driving method, and ensure the high efficiency of external voltage driving.

[0140] Embodiment 6:

[0141] Based on Example 5, the embodiment of the present invention determines the electromigration effect caused by voltage fluctuation based on the damping factor according to the electromigration phenomenon and the transmission of carriers by the electric field, including:

[0142] According to the relationship between the damping factor and the electric field and the movement of the carriers in the electric field, the initial position and velocity of the carriers, as well as the strength and direction of the electric field are obtained;

[0143] Constructing a mathematical model describing the electric field-carrier transport process according to the initial position and velocity of the carriers, and the intensity and direction of the electric field;

[0144] The voltage fluctuation as an external excitation factor is added to the model to obtain the carrier transport process after the electric field changes;

[0145] The electromigration effect caused by voltage fluctuation is determined according to the electromigration phenomenon and the carrier transport process.

[0146] In this embodiment, the damping factor is a physical quantity used to describe the attenuation degree in a physical vibration or wave system.

[0147] In this embodiment, the movement of carriers in the electric field is driven by the electric field force. When an external electric field exists, the electric field force causes the carriers to move along the direction of the electric field.

[0148] In this embodiment, the initial position of the carrier refers to the initial position of the atomic or ionic coordinates in the crystal structure.

[0149] In this embodiment, the velocity of the carrier refers to the speed at which the charged particles (which may be positive or negative) move in the crystal structure.

[0150] In this embodiment, the intensity of the electric field refers to the magnitude of the force exerted on the electric charges passing through a unit area.

[0151] In this embodiment, the direction of the electric field refers to the direction of the line from the positive charge to the negative charge, that is, the direction of the electric field force on the positive charge.

[0152] In this embodiment, when the electric field changes, the carriers will be affected by the force of the electric field and thus be transported along the direction of the electric field lines.

[0153] The beneficial effects of the above technical solution are: a mathematical model describing the effect of electric field on carrier transport is constructed based on the initial position and velocity of the carriers, as well as the strength and direction of the electric field, and the carrier transport process after the electric field changes is obtained, thereby determining the electromigration effect. This allows a better understanding of the influence mechanism of voltage fluctuations on electromigration, and based on these influence mechanisms, the driving circuit of the organic electroluminescent component can be optimized, thereby improving the carrier transport efficiency during the driving process, helping to reduce energy consumption and improve component performance.

[0154] Embodiment 7:

[0155] Based on Example 6, the embodiment of the present invention sets the operating frequency of the switch tube based on relevant parameters according to the electromigration effect, and realizes external voltage driving of the organic electroluminescent component according to the operating frequency of the switch tube, including:

[0156] Obtaining the bias caused by uneven charge distribution on both sides of the PN junction when the transistor of the organic electroluminescent component is working according to the electromigration effect;

[0157] Determine the operating characteristics of the transistor of the organic electroluminescent component according to the bias, and determine the opening angle and the bias degree of the operating point of the transistor of the organic electroluminescent component according to the operating characteristics;

[0158] The operating frequency of the switch tube is set based on relevant parameters according to the opening angle of the transistor of the organic electroluminescent component and the bias degree of the operating point, and the external voltage driving of the organic electroluminescent component is realized according to the operating frequency of the switch tube.

[0159] In this embodiment, the operating characteristics of the transistor of the organic electroluminescent component include: voltage dependence and current dependence.

[0160] In this embodiment, the turn-on angle of the transistor refers to the relationship between the current and the voltage when the transistor is turned on, and describes the maximum input voltage range in which the transistor can operate.

[0161] In this embodiment, the bias degree of the operating point of the transistor refers to the positional relationship of the operating point of the transistor relative to its forward or reverse blocking region. The bias degree of the operating point determines whether the transistor can work normally and its working efficiency. When the operating point of the transistor is in the forward blocking region, the transistor is in the cut-off state; and when the operating point is in the forward conduction region, the transistor is in the on state.

[0162] In this embodiment, the operating frequency of the switch tube refers to the speed of the periodic change of the switching of the switch tube, and represents the switching speed of the switch tube, that is, the length of time it takes for the switch tube to complete a switching action in one cycle.

[0163] The beneficial effects of the above technical scheme are: the working characteristics of the component transistor are obtained according to the bias caused by the uneven charge distribution on both sides of the PN junction when the transistor of the organic electroluminescent component is working, and the working frequency of the switching tube is set based on the opening angle of the transistor and the bias degree of the working point, which can improve the working efficiency of the switching tube. At the same time, the size and direction of the external voltage of the organic electroluminescent component can be accurately controlled, which can improve the efficiency of the external voltage driving, and improve the stability and reliability of the external voltage driving method of the organic electroluminescent component.

[0164] Embodiment 8:

[0165] Based on Example 7, before obtaining the electrical characteristics and working environment of the organic electroluminescent component and determining the driving protocol according to the electrical characteristics and working environment, the embodiment of the present invention further includes:

[0166] Acquire the motor operating parameters of the organic electroluminescent component, and determine the current non-zero torque of the organic electroluminescent component under different power generation effects according to the motor operating parameters;

[0167] Determine an offset component according to the current non-zero torque and the standard non-zero torque under different power generation effects;

[0168] Determine the mechanical friction level of the motor of the organic electroluminescent component, and determine the friction force additional torque component of the motor when it is working according to the mechanical friction level;

[0169] According to the offset component and the friction additional torque component, the net torque component of the organic electroluminescent component under different power generation effects is obtained;

[0170] Determine a transmission torque requirement parameter between the light-emitting drive assembly and the motor, and determine a drive redundancy coefficient of the motor according to the transmission torque requirement parameter and the net torque component;

[0171] Determine a numerical attribute of a drive redundancy coefficient, and determine a drive supply level of the motor according to the numerical attribute, wherein the numerical attribute includes: a positive value and a negative value;

[0172] Determine the external voltage auxiliary driving level requirement according to the driving supply level, and determine the auxiliary driving configuration parameters of the driving node corresponding to each light-emitting component according to the external voltage auxiliary driving level requirement and the configuration parameters of the driving node corresponding to the light-emitting driving component;

[0173] Determine the synchronization configuration parameters of the external voltage auxiliary drive according to the auxiliary drive configuration parameters of the driving node corresponding to each light-emitting component;

[0174] The drive protocol is determined based on the synchronous configuration parameters combined with the electrical characteristics and the working environment.

[0175] In this embodiment, the function of the motor of the organic electroluminescent component is to drive the organic electroluminescent element to move at a high speed, thereby realizing image updating, and the working parameters include: current, rotation speed, and torque.

[0176] In this embodiment, the current non-zero torque of the organic electroluminescent component under different power generation effects refers to the motor torque value generated by the organic electroluminescent component under different external power stimulations. Different power generation effects refer to changes in parameters such as the type of external power or voltage level received by the organic electroluminescent component. Such changes may cause changes in the motor speed or torque. The current non-zero torque indicates the minimum torque value generated by the motor when such a change occurs, that is, the minimum torque value required for the motor to keep running after the power supply changes.

[0177] In this embodiment, the standard non-zero torque of the organic electroluminescent component under different power generation effects refers to the optical output power generated by the organic electroluminescent element under different external voltage or current conditions.

[0178] In this embodiment, the offset component refers to the error between the current non-zero torque and the standard non-zero torque.

[0179] In this embodiment, the mechanical friction level of the organic electroluminescent component motor refers to the degree of influence of the heat generated by friction on the stability and performance of the organic electroluminescent component during actual use.

[0180] In this embodiment, the friction additional torque component means that when an object is subjected to the effect of friction, in addition to the inertia of the object and the inertia of the rotation axis, additional torque components will be generated. These additional torque components mainly depend on the magnitude and direction of the friction applied to the object, as well as the mass distribution of the object.

[0181] In this embodiment, the net torque component refers to the difference between the actual torque generated between the rotation axis and the rotation axis after taking into account the internal forces and inertia of the object.

[0182] In this embodiment, the transmission torque requirement parameter between the light-emitting driving component and the motor refers to the parameter used to determine the power and / or load characteristics that the light-emitting driving component must provide.

[0183] In this embodiment, the driving redundancy coefficient of the motor refers to the driving power redundancy required by the motor under given conditions to ensure that the motor can operate normally and safely.

[0184] In this embodiment, the external voltage auxiliary driving level requirement refers to the minimum auxiliary voltage level required for the motor or the driving device.

[0185] In this embodiment, the auxiliary drive configuration parameters of the driving node refer to parameters used to control and adjust the auxiliary drive of the driving node, including:

[0186] Number of poles of the auxiliary motor: The number of poles of the auxiliary motor determines its rotation speed. A higher number of poles will result in a faster rotation speed, while a lower number of poles will result in a slower rotation speed.

[0187] Auxiliary motor current limit: The auxiliary motor current limit determines the maximum current value allowed to flow through the auxiliary motor.

[0188] In this embodiment, the synchronization configuration parameters of the external voltage auxiliary drive refer to parameters used for the synchronous external voltage auxiliary drive, including: synchronization level and synchronization ratio.

[0189] The beneficial effects of the above technical solution are: determining the synchronization configuration parameters of the external voltage auxiliary drive according to the auxiliary drive configuration parameters of the driving node corresponding to each light-emitting component, and determining the driving protocol in combination with the electrical characteristics and the working environment, which can ensure the accuracy and rationality of the synchronization configuration parameters, and can better adapt to different driving nodes, thereby improving the stability and reliability of the system. At the same time, a suitable driving protocol can ensure the reliability and efficiency of the driving system.

[0190] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0191] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An external voltage driving method for an organic electroluminescent component, characterized in that: include: Step 1: Obtain the electrical characteristics and working environment of the organic electroluminescent component, and determine the driving protocol according to the electrical characteristics and working environment; Step 2: Determine the voltage waveform and duty cycle related parameters within the switching cycle according to the driving protocol; Step 3: obtaining the electromigration phenomenon when the switch tube of the organic electroluminescent component is turned on, setting multiple voltage levels, and obtaining the transmission of the electric field to the carriers when the switch tube of the organic electroluminescent component is turned off; Step 4: Determine the electromigration effect caused by voltage fluctuation based on the electromigration phenomenon and the electric field on carrier transport based on the damping factor; Step 5: setting the operating frequency of the switch tube based on relevant parameters according to the electromigration effect, and realizing external voltage driving of the organic electroluminescent component according to the operating frequency of the switch tube; Wherein, the electromigration effect caused by voltage fluctuation is determined based on the damping factor according to the electromigration phenomenon and the transmission of carriers by the electric field, including: According to the relationship between the damping factor and the electric field and the movement of the carriers in the electric field, the initial position and velocity of the carriers, as well as the strength and direction of the electric field are obtained; Constructing a mathematical model describing the electric field-carrier transport process according to the initial position and velocity of the carriers, and the intensity and direction of the electric field; The voltage fluctuation as an external excitation factor is added to the model to obtain the carrier transport process after the electric field changes; Determine the electromigration effect caused by voltage fluctuation according to the electromigration phenomenon and the carrier transport process; According to the electromigration effect, the operating frequency of the switch tube is set based on relevant parameters, and the external voltage driving of the organic electroluminescent component is realized according to the operating frequency of the switch tube, including: Obtaining the bias caused by uneven charge distribution on both sides of the PN junction when the transistor of the organic electroluminescent component is working according to the electromigration effect; Determine the operating characteristics of the transistor of the organic electroluminescent component according to the bias, and determine the opening angle and the bias degree of the operating point of the transistor of the organic electroluminescent component according to the operating characteristics; The operating frequency of the switch tube is set based on relevant parameters according to the opening angle of the transistor of the organic electroluminescent component and the bias degree of the operating point, and the external voltage driving of the organic electroluminescent component is realized according to the operating frequency of the switch tube.

2. The external voltage driving method of the organic electroluminescent component according to claim 1, characterized in that: Acquiring electrical characteristics and working environment of the organic electroluminescent component, and determining a driving protocol according to the electrical characteristics and working environment, including: Determine the model and specification of the organic electroluminescent component, and determine the electrical parameters in the circuit of the organic electroluminescent component according to the model and specification; Obtaining electrical characteristics of the organic electroluminescent component according to the electrical parameters based on the user manual; Acquire the working temperature and working humidity of the organic electroluminescent component according to the sensor, and acquire the working environment of the organic electroluminescent component according to the working temperature and working humidity; Determine a driving topology according to electrical characteristics and working environment of the component, and determine a driving mode according to the driving topology; A control strategy is acquired according to the driving mode based on the driving power type, and a driving protocol is determined according to the control strategy.

3. The external voltage driving method of the organic electroluminescent component according to claim 1, characterized in that: Determine the voltage waveform and duty cycle parameters in the switching cycle according to the driving protocol, including: Acquire the length and frequency of the switching cycle according to the driving protocol, and acquire the number of voltage changes in each switching cycle according to the length and frequency of the switching cycle; Obtaining a ripple coefficient of the voltage in each switching cycle according to the number of changes of the voltage in each switching cycle; The pulse width of the voltage is obtained according to the ripple coefficient of the voltage, and the relevant parameters of the voltage waveform and the duty cycle are obtained based on the driving protocol requirements.

4. The external voltage driving method of the organic electroluminescent component according to claim 1, characterized in that: Obtain the electromigration phenomenon when the switch tube of the organic electroluminescent component is turned on, set multiple voltage levels, and obtain the transmission of the electric field to the carrier when the switch tube of the organic electroluminescent component is turned off, including: Obtaining the electrochemical properties of organic electroluminescent components based on electrochemical impedance spectroscopy analysis; Determining the rate and mechanism of electromigration when the switch tube is turned on and the capacitance effect during the electromigration process according to the electrochemical performance; Determining the electromigration phenomenon according to the electromigration rate, mechanism and capacitance effect during the electromigration process; Apply different bias voltages to the switch tube of the organic electroluminescent component, and obtain the electric field distribution under different bias voltages and the current response of the switch tube under each bias voltage based on the electric field mapping technology; Evaluating the influence of the electric field on carrier transport according to the electric field distribution under the different bias voltages and the current response of the switch tube under each bias voltage; According to the influence of the electric field on the carrier transmission, the transmission of the carrier by the electric field when the switch tube of the organic electroluminescent component is turned off is obtained based on the carrier transport behavior.

5. The external voltage driving method of the organic electroluminescent component according to claim 4, characterized in that: After obtaining the electrochemical properties of the organic electroluminescent component through electrochemical impedance spectroscopy analysis, it includes: Obtain electrochemical impedance spectroscopy samples of organic electroluminescent components using a four-terminal resistance box; Cleaning the sample and collecting electrochemical impedance spectroscopy data; Analyzing the data, and determining the electrochemical impedance spectroscopy characteristics of the surface of the organic electroluminescent component according to the analysis results; The electrochemical performance of the organic electroluminescent component is obtained based on the shape and intensity of the electrochemical impedance spectrum curve according to the electrochemical impedance spectrum characteristics.

6. The external voltage driving method of the organic electroluminescent component according to claim 1, characterized in that: Before obtaining the electrical characteristics and working environment of the organic electroluminescent component and determining the driving protocol according to the electrical characteristics and working environment, the method further includes: Acquire the motor operating parameters of the organic electroluminescent component, and determine the current non-zero torque of the organic electroluminescent component under different power generation effects according to the motor operating parameters; Determine an offset component according to the current non-zero torque and the standard non-zero torque under different power generation effects; Determine the mechanical friction level of the motor of the organic electroluminescent component, and determine the friction force additional torque component of the motor when it is working according to the mechanical friction level; According to the offset component and the friction additional torque component, the net torque component of the organic electroluminescent component under different power generation effects is obtained; Determine a transmission torque requirement parameter between the light-emitting drive assembly and the motor, and determine a drive redundancy coefficient of the motor according to the transmission torque requirement parameter and the net torque component; Determine a numerical attribute of a drive redundancy coefficient, and determine a drive supply level of the motor according to the numerical attribute, wherein the numerical attribute includes: a positive value and a negative value; Determine the external voltage auxiliary driving level requirement according to the driving supply level, and determine the auxiliary driving configuration parameters of the driving node corresponding to each light-emitting component according to the external voltage auxiliary driving level requirement and the configuration parameters of the driving node corresponding to the light-emitting driving component; Determine the synchronization configuration parameters of the external voltage auxiliary drive according to the auxiliary drive configuration parameters of the driving node corresponding to each light-emitting component; The drive protocol is determined based on the synchronous configuration parameters combined with the electrical characteristics and the working environment.

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